The National Health and Health Commission's "2019 Child and Adolescent Myopia Prevention and Control Health Education Core Information" (click for more details) suggests that 0 to 6 years old is a critical period for children's visual development, and should pay special attention to the protection of children's early vision. And health.
The core information points out that staring at electronic screens such as mobile phones, computers and televisions for a long time or close is one of the reasons for myopia. Children under the age of 6 should try to avoid using their mobile phones and computers. Parents should use electronic products as little as possible in front of their children.
After entering school, the duration of the use of electronic products in schools should not exceed 30% of the total duration of teaching. After 30 to 40 minutes of using electronic products in your spare time, you should take a break and relax for 10 minutes. The use of electronic products for non-learning purposes should not exceed 15 minutes, and should not exceed 1 hour per day.
In addition, children and adolescents should not use eye time for more than 40 minutes, and should have plenty of daytime outdoor activities. Teachers and parents should guide their children to actively participate in physical exercise, and let the children carry out outdoor activities for more than 2 hours every day. The outdoor activities of boarding kindergartens should not be less than 3 hours.